Daewoo Matiz (1998 - 2004) - 00 796 Ignition failure while driving | Technical matters | Back Room Forum

Mon 6 Jul 2009 20:18

00 796 Ignition failure while driving - sheeptick

My Matiz cuts out after about 2 miles on every trip; it usually restarts after a few minutes, though lately it has been taking much longer, and sometimes has been very difficult to start first thing. I bought the car off a friend 2 months ago. 4 garage visits have led to replacing the distributor, the fuel injector and the valve-pulse module. The last two were by the local Chevrolet dealer after a computer check.
Now the local Chevrolet dealer says the computer wants me to replace the immobiliser ECU, cost £330. It seems likely that the parts they replaced are in working order (£95 to replace).
My question is, am I being ripped off? What if replacing the ECU does not solve the problem?
If a friend asked me to look at their computer because the screen wasn't working, I would not simply replace the monitor, signal lead and graphics card. I'd swap out each part.
I know very little about cars, and would be grateful for any feedback.

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Tue 7 Jul 2009 17:46

00 796 Ignition failure while driving - injection doc

worth checking the wiring loom from the bulkhead on passenger side into engine bay. I have had 2 fail over the years & took a while to find the fault. the first one I actually changed all the imobilizer & ECU etc & ign switch & still had the same fault.
I got hold of the loom & pulled it about whilst the engine was ticking over & hey presto it cut out.
Then a year later I had a second one come in with similar fault & the loom had broken in the same place.
Worth a check.

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Tue 7 Jul 2009 17:58

00 796 Ignition failure while driving - bell boy

ive seen this cutting out on a matiz and it had me beat so the loom idea certainly is worth baring in mind
im not going to buy one though

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Wed 8 Jul 2009 10:12

00 796 Ignition failure while driving - sheeptick

Thanks for your reply. I'll give it a go when I can get someone to show me where to find the wiring loom.
Someone posted advice on how to replace an integrated circuit (IC) in the immobiliser.
www.daewooclub.co.uk/forums/showthread.php?tid=3772
It looks quite promising and not too difficult. I wonder what anyone thinks of this idea.
Thanks
Charlie

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Wed 8 Jul 2009 17:59

00 796 Ignition failure while driving - Another John H

"wiring loom" is the interconnecting wires from the various parts of the car - rather than being routed singly, they are taped together where a number of wires take a common path to form a "wiring loom".

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